Get Lens With A Fixed Focal Length For Compact and Wide Angle Shots

A fixed focal length lens is a straightforward lens that generates clear, sharp images and is also called a prime lens. It is a compact, lightweight lens used primarily for photography and monitoring, as they are easy to carry and cost-effective. These have a single non adjustable focal length lens, unlike a zoom lens focal length which is variable. In other words, these lens has a single, unchangeable focal length, which provides a specific view of the field. But can’t zoom in or out. They provide the compactibility, making them easy to carry during outdoor shots and convenient to place outside the house for surveillance.

A fixed focal length lens is also preferred inmachine vision applications because it offers superior optical performance. Additionally, greater reliability and more consistent performance results are achieved without the complex size and potential calibration issues. Unlike the zoom lens focal length does in its mechanism. Let’s get to know the properties, functionality, models, and applications of these fixed focal distance lens.

Characteristics of  Lenses With Fixed Focal Lengths

These fixed focal distance lens have numerous functionalities or properties, making them popular across many applications. Let’s look at some key factors of the lens with focal length.

1. Compact Size

The lenses are easy to carry around during shoots due to their lightweight, compact design. Besides, this quality of prime lenses makes it easy to handle and operate. It can also fit in tight spaces.

2. Easy Installation and Low Maintenance

The fixed focal length lens can be easily installed in residential and tight spaces because it has fewer mechanical and moving parts. The ease of installation enhances security efficiency by reducing installation and setup time. Additionally, these fixed focal distance lens require less maintenance and have lower operating costs.

3. Great Quality Optical Imaging

The lens captures and produces sharp, detailed, and extremely high-quality images. These qualities are what add to these lenses’ popularity. A fixed focal length lens is ideal for security monitoring because it produces lower distortion in its images. This helps identify intruders and burglars who barge into your property, as the pictures are highly detailed and accurately colored.

4. Enhanced Low-light Performance

A lens with focal length fixed makes an excellent solution for low-light security monitoring. Because having a wider aperture allows more light to enter the sensor, producing a clear image even in low-light settings. For that reason, it is the ideal lens with focal length fixed for surveillance security.

5. Cost-Effective Option

These lenses cost less than a zoom lens focal length because they don’t have an adjustable focal length lens. Given this lens’s optical quality and functionality, it is very cost-effective to purchase in bulk when you need multiple cameras. Their image quality is superior to that of expensive lenses.

6. Constant Field View

For a fixed focal length lens, a constant field is viewed as both a good thing and a restriction. It is extremely beneficial in areas with limited coverage, allowing you to spot these cameras in ATMs, hallways, and narrow spaces.

Lenses With Fixed Focal Length In Various Models As per Preference

You can choose a lens with focal length fixed with a constant or narrow field of view, or a wider FOV. According to your preference, here are a table and a list of camera models with a fixed focal distance lens.

Shared Specs (apply to all lenses below unless noted otherwise):

• All are SIR series lenses
• SWIR-optimized: 900–1700 nm
• High resolution: MTF (Center/Corner) 100 lp/mm
• C-Mount, manual focus
• Iris: F1.4–16 (except last model with fixed F1.4)
• Image circle: φ13 mm (> 2/3″) for all lenses except the 1″ model

Comparison Between Fixed, Varifocal, And Zoom Lenses For Security

The lens with focal length fixed, the Varifocal (which is an adjustable focal length lens ), and the zoom lens focal length. These are the top three lenses used for high-security surveillance. In this section, we will explore each of them, including their capabilities and restrictions.

1. Lenses With Fixed Focal Length

The first in the list is a fixed focal length lens. So far, we have read about its advantages, such as compactness, cost-effectiveness, high-quality imaging, and more. However, its constant field of view limits its application. That’s why we have many other top competitors in the surveillance market.

2. Varifocal Lens

The adjustable focal length lens, named avarifocal lens, is second on the list. It’s just the opposite of a fixed focal distance lens, whichmeans the required modification is easily available. You can also zoom in on an object from a greater distance, as it’s an adjustable focal length lens. You can also capture a wider-angle view by shortening the focal length. All these features make it an  extremely reliable option for surveillance work

3. Zoom Lens

The zoom lenses are also explicitly required in high-security surveillance areas, and even in traffic management. It can capture high-quality images by zooming in on distant objects, making it extremely helpful for identifying culprits and vehicles. However, the zoom lens focal length falls short of fully covering different fields of view without changing the camera position. In comparison with a varifocal lens.

Concluding Here!

The fixed focal length lens is highly popular and has a range of applications, but it has primarily been used in surveillance work. Some of them are security surveillance, photography, machine vision systems, and monitoring assembly lines. The choices of these lenses are essential for better coverage and clear imaging. Therefore, choosing a manufacturer with high-quality products and certification in line is important for long-term use and reliability. One such fixed focal length lens provider is Superior CCTV. We have a range of lenses that are suitable and customizable according to your requirements.